Expanding wall channel



FIG. 1 is a front, top perspective drawing of one embodiment of an expanding wall channel showing my new design, the channel in an unexpanded configuration;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is front view thereof;

FIG. 7 is a back plan view thereof;

FIG. 8 is a front, top perspective view of thereof with the channel in an expanded configuration;

FIG. 9 is a top view of a second embodiment thereof; and,

FIG. 10 is a top view of a third embodiment thereof. 

CLAIM The ornamental design for an expanding wall channel, as shown and described. 